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BamZipPow · 02-12-2017, 10:55 PM

I would check and clean all yer grounds especially the ones near the ECU. It is the simpliest and cheapest thing to do. They will be brown, black/white stripe wires or white/black stripe wires that are bolted to the interior wall with a 10mm head bolt.

Anytime the ECU loses the +B power or ground, the ECU will reset any stored codes and short/long term fuel maps.

Igniter #1 wires might be:
#1 blue/red stripe +B, +12 from the AM2 fuse via the ignition switch
#2 blue/light blue stripe IGT from the big connector on the ECU, pin 23
#3 blue/yellow stripe IGF from the big connector on the ECU, pin 17
#4 brown wire from ground point EE which should be through the distributor to the engine block

Looking into the igniter wiring harness connector, pin 1 is on the left.

The IGT2 wire fer coil #2 is blue/orange stripe wire and goes to the big ECU connector at pin 22.

The IGT/IGT2 wires should go straight from the connector to the ECU with no splice connectors.

02-12-2017, 10:55 PM	#232 (permalink)
BamZipPow T-100 Road Warrior Join Date: Apr 2008 Location: The Woodlands, TX Posts: 1,921 BZP T-100 (2010) - '98 Toyota T-100 ext cab - 3.4L/auto SR5 Last 3: 24 mpg (US) BZP T-100 (2011) - '98 Toyota T-100 ext cab - 3.4L/auto SR5 Last 3: 23.66 mpg (US) BZP T-100 (2009) - '98 Toyota T-100 ext cab - 3.4L/auto SR5 Last 3: 19.01 mpg (US) BZP T-100 (2012) - '98 Toyota T-100 ext cab - 3.4L/auto SR5 Last 3: 25.45 mpg (US) BZP T-100 (2013) - '98 Toyota T-100 SR5 Last 3: 25.79 mpg (US) BZP T-100 (2014) - '98 Toyota T-100 SR5 Last 3: 23.18 mpg (US) BZP T-100 (2015) - '98 Toyota T-100 SR5 Last 3: 23.85 mpg (US) BZP T-100 (2016) - '98 Toyota T-100 SR5 Last 3: 17.62 mpg (US) BZP T-100 (2017) - '98 Toyota T-100 SR5 90 day: 20.78 mpg (US) BZP T-100 (2018) - '98 Toyota T-100 SR5 90 day: 20.19 mpg (US) BZP T-100 (2019) - '98 Toyota T-100 SR5 BZP T-100 (2020) - '98 Toyota T-100 SR5 2012 Scion iQ - '12 Scion iQ Base Thanks: 3,502 Thanked 1,395 Times in 968 Posts	I would check and clean all yer grounds especially the ones near the ECU. It is the simpliest and cheapest thing to do. They will be brown, black/white stripe wires or white/black stripe wires that are bolted to the interior wall with a 10mm head bolt. Anytime the ECU loses the +B power or ground, the ECU will reset any stored codes and short/long term fuel maps. Igniter #1 wires might be: #1 blue/red stripe +B, +12 from the AM2 fuse via the ignition switch #2 blue/light blue stripe IGT from the big connector on the ECU, pin 23 #3 blue/yellow stripe IGF from the big connector on the ECU, pin 17 #4 brown wire from ground point EE which should be through the distributor to the engine block Looking into the igniter wiring harness connector, pin 1 is on the left. The IGT2 wire fer coil #2 is blue/orange stripe wire and goes to the big ECU connector at pin 22. The IGT/IGT2 wires should go straight from the connector to the ECU with no splice connectors. __________________ Dark Aero-The world's first aerodynamic single wheel boat tail!